Brake



Mairch 20, 1928. 1,663,295

A. Y. DODGE BRAKE Filed July 1e,' 192v INVENTOR ADlE l -Y. Done:

ATTORNEY Patented Mar. 20, 1928. l

UNITED STATES PATENT OFFICE.

iamnr. Y. nonen, or sou'rn BEND, INDIANA, AssIeNo'n TO namarx BRAKE comm, or cnrcaeo, ILLINOIS, A. CORPORATION or ILLmoIs.

BRAKE.

Application filed July 16,

This invention relates tobrakes and is illustrated as embodied in an internal ex anding brake -for an automobile. An object of the invention is to balance the return springs acting on the shoes or equivalent friction parts by the provision of novel means which can readily be adjusted without the use of an measuring instruments or the like. Pre erably the springs are con: nected to an angularly movable arm which shifts itself to balance the pressure of the springs when the brake is ap lied and'which is then clamped firmly in a justed position to prevent further shlftin I The above andother ob ects and features of the invention, including various novel and desirable details of construction, will be apparent from the following description of one illustrative embodiment shown in the accompanying drawing, in which:

Figure 1 is a partial vertical section through the upper part of the brake just inside the head of the brake drum and showing the brake shoes i1 side elevation; and Figure 2 is a perspective of the aboveiiescribed movable arm and its mounting.

In the arrangement selected for illustration the brake includes a rotatable drum. 10, at the open side of which is arranged a back- 30 ing plate 12 and within which, is arran the friction means of the brake. The friction means 'is illustrated as including brake shoes 14 forced against the drum by means] 192?. Serial No.,206,184.

equal force. Preferably the springs are connected to an angularly movable arm 22 having a bolt or stem 24- projectin through a slot 26 in the backing plate. %Vhen the brake is applied, as for example by turning the cam 16, the springs 18 and 20 will turn the arm 22 until the pressures are balanced, and while the brake is held'so applied a. nut 28 is tightened up on the bolt or stem 24 to secure it firmly in place in its adjusted position, thus preserving the balancing of the springs 18 and 20. .50 While' one illustrative embodiment has been described in detail, it is not my intentionto limit'the scope of the invention to that particular embodiment or otherwise than by the terms of the appended claims. 5 I claim: a

1. A brake comprising oppositely-movable friction parts, in combination with a spring resisting movement of each of said arts, an angularly' movable arm to which'sai springs are connected and which is shifted to balance the springs by application of the brake, and means for securing said arm with the springs balanced, to prevent it from shifting further.

2. A brake comprising oppositely-movable 66 friction parts, in combination with a spring resisting movement of each of said parts,

ged anangularly movable arm to which said sprin are connected and which is shifted to b ance the' springs .by application of the brake, and a clamping bolt and nut ada ted such as a double cam 16=against theresist- 'to be tightenedtoprevent further shi ting 35 ance of return springs 18 and 20. v

The present invent on relates to the balancing of springs 18 and 20 so that they will act on the shoes 14 or their equivalents with ed y e of the arm. 1

In testimony whereof, I have hereunto 

